Improvement in three-high rolls



ZSheetsv--Sheetff' W. HARRIS 31.1. M. AYER.

Three High Rolls.

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man@l Aprile, 1875.

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Three High Rails.

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@ff i: j 1% 'UM'IED STATES PATENT Prien A wILLIAM HAnnisAND JOHN M. AYER, 0F CHICAGO, Immers?.

IMPROVEMENT IN'THREE-HIGH ROLLS.

Specification forming part of Letters Patent No. 16 1,786, dated April 6, 1875; application'led February 2, 1815.

' To all whom it may concern:

Be it known'that we, WrLLIAM HARRIs and JOHN M. AYER, of the city of Chicago,

in the county of Cook and State of Illinois,

yhave invented certain new and useful Improvements in Three-High Rolls; and we do hereby declare the following to be a full, `clear,

and exact description of the invention, such\ 4as will enable others skilled in the art to which it pertains to-make and use it, reference being had to the accompanying drawings, which form part of this specification.

Oursinvention relates to certainA improvements in three-high rolls, orapparatus for rolling iron sheets or plates, by; means 'of which we are enabled to produce grades of sheet or plate metal varying from the lightest gages tothe heaviest that may be required.

' Our invention consists, iir'st, of a. train of .three-high rolls supported, or journaled, one

above the other, in a suitable frame, the centrall roll being hollow and of a larger diameter than the other two, and receiving through v it a constant stream of cold water, the top land immediate rolls, supportedv upon flat elevationot' our apparatus; Fig. 2, a side elevation 5 Fig. 3, a longitudinal vertical section of-the.same,'and Fig. 4 a transverse vertical section of the same. a l

A A represent strong vertical standards, of cast iron or other suitable material, secured to a bed or frame, B, and held together by longitudinal` braces C, as usual. Each/of said standards. A A is slotted vertically,'as shown at A', for the reception of, the journals ot'l the rolls D EF. These rollsare arranged one'y above the other, in the usual manner, the

journals of the lower roll having bearingsl in.l the blocks G G, secured in the lower parts of the slots vA', and the upperand intermediate rolls having bearings upon the iiatsprings H H, extending across the slots A in the standards A A, as shown in Fig. 2. vThe object of these springs is to follow upthe rolls when in' operation, Aand hold them in downward passage, to. prevent pounding or chipping. Over each journal of the upper roll is ablock resting upon the same, and sliding 'in the slots A', which block may` be caused to bear upon said journals, with the requisite degree of force, by means of the screws I I passing throughv the upper portions of the standards vA A. By means of these blocks and screws the rolls may beadjusted for the various gages of sheet metal to be produced. The journals of all the rolls have lateral bearings against the blocks-aa, secured in the sides of theslots A. we form 'of the same/diameter, usually about twenty inches;` but the intermediate roll we make somewhat larger-about twenty-one or twenty-two inches in diameter. Byfchisv construction of the rolls we are enabled tobring a greater pressure to bear upon the metal to be rolled lthan where the intermediate roll is smaller than the others, and can consequently produce sheets of a much heavier gage than usual, and we also .entirely obviate any'tendency to' buckle7 the metal during the opereected by means of a series of perforated tubes, K K, extending across the apparatus near the 4surfaces of the rolls, and so arranged as tojconstantly shower jets of cold water iupon the same. In' order -to carry oii the water and keep it from falling upon the metal,

lwefarrangeunder eachpipe' or tube KK a trough, L, projecting at each side of the apparatus through apertures ll in the standards -A A, through .which the pipes K K also p ass. r[.he edges ofthese troughs are -kept' The upper and lower rolls' closely in contact with the rollsbymeans of 'a series of spiral springs, M M, 'secured-in any 4 convenient manner to the standards A A, so

as to press against the ends'of the troughs. ByA keeping the water away'from the metal during the process of rolling, and thus keepiup;l it from being rapidly cooled, we overcomethe tendency of the metal to co`ol in working a light or finel grade of sheets, and are thus 'i enabled to produce light or -ne gages, which has been hitherto 'practically impossible-in similar machines, owiugto the Waste occa sioned by the sticking ofthe sheets. Ourap-l paratus is constructed in other respects simi-` lar to the ordinary three-high rolls 'infcoinmon use, and its operation will be readily un,-

derstood by persons skilled in the art of rolling metals,fso that further explanation of the same is unnecessary.-

' What we claim, and desire to secure by Let l ters Patent, s

1 The improved three-high rolls herein de s'cribeL consisting Y.of the topl rolli'l), inter-4'v mediate hollowrollE, and lower roll F, s uppoted'or journaled, -one above the other, lin ai frame, A B, ,tl1`e topi and intermediate rolls D E, supported upon atfsprings H, and the eeuu tra] hollow roll E, -bein g V larger 'than the others,` and 'adapted to receive through 'it a.- constant streamof: water, :island-for the-purposes de- .z

scribed.

2,. The troughs -for carrying""" oi the Jwati'ar,`

and preventing thefsame from;l falling upon the metaL-substantially asi set forthggin'jcombination with thespiral springs fo'rjpressing4 themagainst therolls, and the pipes `forfsnpv In testimony that We claim' the foregoingwe have hereunto set our hands. l Y t l 'WlLLIAlVLHARRIS;

' JOHNYM. AYER.

Witnesses :f'

J AMEs THOMAS, J om; LAWLOR. 

